Q
What main controller chip does the DTB3F25 NIC use?
A
This NIC adopts a high-performance Mellanox chip, ensuring enterprise-grade stability, ultra-low latency, and excellent high-speed data transfer compatibility.
Q
Is this USB4 NIC compatible with Thunderbolt 3, Thunderbolt 4, or Thunderbolt 5 ports?
A
Yes. Its upstream USB4 40Gbps interface is fully backward and forward compatible with Thunderbolt 3, Thunderbolt 4, and Thunderbolt 5 ports.
Q
Does the DTB3F25 require a driver installation on Mac OS?
A
No. It is completely driver-free (plug-and-play) on Mac OS, allowing Apple users to directly enjoy 25G high-speed networking after connection.
Q
What is the actual file transfer speed of this 25G NIC over the internal network?
A
In an internal network environment, its actual transfer speed can reach approximately 2.75 GB/s, which nearly saturates the practical bandwidth limit of the 40Gbps USB4/Thunderbolt channel.
Q
Does the downstream USB4 port support daisy-chaining and device charging?
A
Yes. The downstream USB4 40Gbps port supports 60W PD charging output and daisy-chaining, allowing you to connect additional displays, storage devices, or docking stations.
Q
Can this NIC be used with a 10G SFP+ fiber module?
A
Yes. The dual SFP28 ports support 25Gb/s and 10Gb/s auto-negotiation, so they are compatible with 25G SFP28 modules as well as 10G SFP+ modules or DAC direct-attach cables.
Q
Does this NIC support Jumbo Frames to accelerate large file transfers?
A
Yes. It supports Jumbo Frames up to 9000 bytes (9K) Mac 2K, which can significantly reduce CPU usage during video post-production or large data transfers.
Q
Does this NIC require an external power supply?
A
Yes. Due to the high-performance operation of the dual 25G ports and the downstream 60W PD output requirement, this product must be connected to the included external DC power adapter to ensure stable operation.
Q
Which operating systems does the DTB3F25 support?
A
It widely supports Mac OS (driver-free), Windows 11/10, and Linux systems, suitable for various workstations, laptops, and server environments.
Q
What do the LED indicators on the SFP28 ports represent?
A
Solid yellow indicates successful 25G link, blinking yellow indicates data transfer in progress, and off means no network connection.
